/* ===== CSS Variables ===== */
:root {
    --primary-color: #00B8D9;
    --primary-dark: #0091A8;
    --primary-light: #33C5E0;
    --secondary-color: #1A73E8;
    --accent-color: #00FF88;
    --bg-dark: #0A0E27;
    --bg-darker: #050712;
    --bg-card: #131829;
    --bg-card-hover: #1A1F35;
    --text-primary: #FFFFFF;
    --text-secondary: #B4B9C8;
    --text-muted: #6B7280;
    --border-color: #1F2937;
    --shadow-glow: rgba(0, 184, 217, 0.3);
    --shadow-glow-accent: rgba(0, 255, 136, 0.3);
}

/* ===== Reset & Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 1rem 0;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
}

.logo-accent {
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-link.btn-primary {
    background: var(--primary-color);
    color: var(--bg-dark);
    padding: 0.5rem 1.5rem;
    border-radius: 6px;
    font-weight: 600;
}

.nav-link.btn-primary:hover {
    background: var(--primary-light);
    color: var(--bg-dark);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 4px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--bg-dark);
}

.btn-primary:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px var(--shadow-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--bg-dark);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* ===== Hero Section ===== */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--primary-color) 0%, transparent 70%);
    opacity: 0.1;
    border-radius: 50%;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.highlight {
    color: var(--primary-color);
    position: relative;
}

.highlight-accent {
    color: var(--accent-color);
    position: relative;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.card-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, var(--primary-color) 0%, transparent 70%);
    opacity: 0.1;
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.card-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.smart-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.hero-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

/* ===== Features Section ===== */
.features {
    padding: 80px 0;
    background: var(--bg-darker);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s;
    position: relative;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px var(--shadow-glow);
}

.feature-card.featured {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(0, 184, 217, 0.05) 100%);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

.feature-badge {
    display: inline-block;
    background: var(--primary-color);
    color: var(--bg-dark);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-top: 1rem;
}

/* ===== Integration Highlight ===== */
.integration-highlight {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-card) 100%);
}

.integration-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.integration-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

.integration-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.integration-benefits {
    list-style: none;
    margin-bottom: 2rem;
}

.integration-benefits li {
    padding: 0.75rem 0;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.integration-diagram {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.diagram-node {
    background: var(--bg-card);
    border: 2px solid var(--primary-color);
    border-radius: 12px;
    padding: 1.5rem 2rem;
    font-weight: 600;
    color: var(--primary-color);
    min-width: 200px;
    text-align: center;
    position: relative;
    box-shadow: 0 5px 15px var(--shadow-glow);
}

.diagram-connector {
    width: 2px;
    height: 30px;
    background: linear-gradient(to bottom, var(--primary-color), var(--accent-color));
}

.node-smart {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.node-cloud {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.node-integration {
    border-color: var(--secondary-color);
    color: var(--secondary-color);
    background: linear-gradient(135deg, rgba(26, 115, 232, 0.1) 0%, rgba(0, 184, 217, 0.1) 100%);
}

/* ===== CTA Section ===== */
.cta {
    padding: 80px 0;
    background: var(--bg-darker);
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* ===== Page Header ===== */
.page-header {
    padding: 120px 0 60px;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

/* ===== Services Detail ===== */
.services-detail {
    padding: 60px 0;
}

.service-section {
    margin-bottom: 4rem;
    padding: 3rem;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.service-section.featured-service {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(0, 184, 217, 0.05) 100%);
    box-shadow: 0 10px 30px var(--shadow-glow);
}

.service-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.service-icon-large {
    font-size: 4rem;
}

.service-header h2 {
    font-size: 2rem;
    color: var(--primary-color);
}

.service-badge {
    display: inline-block;
    background: var(--primary-color);
    color: var(--bg-dark);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-left: 1rem;
}

.service-intro {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.service-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.service-feature-item h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.service-feature-item p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.integration-box {
    background: linear-gradient(135deg, rgba(0, 184, 217, 0.1) 0%, rgba(0, 255, 136, 0.1) 100%);
    border: 2px solid var(--primary-color);
    border-radius: 16px;
    padding: 2.5rem;
    margin: 3rem 0;
}

.integration-box h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.integration-box p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.integration-box ul {
    list-style: none;
    color: var(--text-secondary);
}

.integration-box li {
    padding: 0.5rem 0;
    font-size: 1.05rem;
}

/* ===== Projects ===== */
.projects {
    padding: 60px 0;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s;
}

.project-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px var(--shadow-glow);
}

.project-image {
    width: 100%;
    height: 200px;
    background: var(--bg-darker);
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-placeholder {
    font-size: 4rem;
    opacity: 0.5;
}

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
}

.project-content p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.7;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    background: rgba(0, 184, 217, 0.2);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.875rem;
}

.projects-note {
    margin-top: 3rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: 8px;
    text-align: center;
    color: var(--text-secondary);
}

/* ===== About ===== */
.about-content {
    padding: 60px 0;
}

.about-section {
    margin-bottom: 4rem;
}

.about-section h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.about-section p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.about-feature {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.about-feature h3 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 1.2rem;
}

.about-feature p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 0;
}

.about-list {
    list-style: none;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.about-list li {
    padding: 0.75rem 0;
}

/* ===== Contact ===== */
.contact-section {
    padding: 60px 0;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
}

.contact-info h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.contact-info > p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.contact-icon {
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 184, 217, 0.1);
    border-radius: 8px;
    flex-shrink: 0;
}

.contact-item h4 {
    color: var(--primary-color);
    margin-bottom: 0.25rem;
    font-size: 1.1rem;
}

.contact-item p {
    color: var(--text-secondary);
}

.contact-form-wrapper {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.required {
    color: var(--primary-color);
}

.form-group input,
.form-group textarea {
    background: var(--bg-darker);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--shadow-glow);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-darker);
    padding: 60px 0 30px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-section h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.footer-section p {
    color: var(--text-secondary);
    line-height: 1.8;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
}

/* ===== Flash Messages ===== */
.flash-messages {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 1001;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.flash-message {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-width: 300px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.flash-success {
    border-color: var(--accent-color);
}

.flash-error {
    border-color: #EF4444;
}

.flash-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.flash-close:hover {
    color: var(--text-primary);
}

/* ===== Responsive Design ===== */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .integration-content {
        grid-template-columns: 1fr;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-dark);
        flex-direction: column;
        padding: 2rem;
        transform: translateX(-100%);
        transition: transform 0.3s;
        border-top: 1px solid var(--border-color);
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .mobile-menu-toggle {
        display: flex;
    }
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }
}